%0 Journal Article %A Niels Jacob %T Examples of non-local time dependent or parabolic Dirichlet spaces %J Colloquium Mathematicum %D 1993 %P 241-265 %V 65 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-65-2-241-265/ %R 10.4064/cm-65-2-241-265 %G en %F 10_4064_cm_65_2_241_265